Kind'a confusing, I saw some pics with 4 boxes and Starboard is talking about 5 fin boxes? I might purchase that board, but I definitely need a center fin, once in while when I go back home, I need a weed fin...
cheers.

Only four fin boxes. I think the talk is about five different types of setup. In reality it's more like three: twin - four fins with big pair forwards - four fins with big pair in the rear. But since you can also put the rear pair forward or to the rear in the box, you get extra options if you count that.

For a quad with a single option, you have to look for a 2010 quad convertible. Another option is the 2011 EVO IQ which sets up as a twin fin or a single fin.

Yes, the 201 Quad IQs come with six fins in total for twin + quad setups.

I reckon both can do that. Maybe, in the twin setup you will be able to handle a little bit more boards relative the wave riding speed (ie some extra volume will hurt less once on the wave). Bothe EVO IQ and Quad IQ shapes float better than the volume might indicate though, so don't oversize too much.

Don't oversize too much!? Well, I have a 76L Down the line wave board, I can't go out when the condition are light and waves are firing, I was going for the EVO IQ 86L or Quads 87L, I'M 75kg...will use it to schlog out, if it's windy I will probably take my 76L, unless you suggest the 82L and sell the 76...but it really need to float! I sailed Igor in Cape Hatteras 2 weeks ago, I had to take my 100L freestyle board to surf...and the last 2 days, impossible to go out without a big floaty wave board...and that was a Real bummer!!! thanks in advance.

Board size is very, very much a question of personal preference, even in light wind. But the perceived size also depend on a lot of other things than shear volume (as soon as you are at all moving).

Some popular production and custom brands have for the last few year adapted shapes which are stacked with a lot to extra volume but in my opinion still kind of suck for schlogging since they are still rather unstable. Again, as long as you are at all moving a flatter deck and slighlty fuller (and sharper) rail shape will in my experience help much more for super light wind sailing, despite less volume.

Every time I'm on Maui I sail super light wind and I tend to get by on 75 liter boards (at 72 kilos), albeit it can be a bit of a struggle in the lightest and biggest days.

So after that background.... The question is what it is that you need from your big board. I can see at least three things.
1. shear float for when you're absolutely standing still.
2. Effective slogging at far below planing but still generally moving a bit
3. Effective planing for sailing just around the planing threshold where the ability to pump and get planing to get out of trouble can be a blessing.

For 1 you NEED volume. At or below 80 and you will sink at standstill.
For 2 I reckon something like a Quad 81/82 will do. If your 76 liter boards is anything like I describe above (fx 56cm or narrower) I think you will find the difference up to the 81/82 is quite big.
For 3 I'd say that even the 76/77 will do as long as sails are 5.3 or below. With bigger sails, 81/82 can get a slight planing advantage.

If you want to play safe, you can go for the 87. If riding speeds get really high, it might be a bit more of struggle, but it is still a very easy and comfy board to ride. But I just wanted to point out some options...

Thanks a lot, really apreciate that you take your time for my questions! Please let me ask another one..the last one. ;-)
My 76L is the wave board I used on Maui last year and will sell it soon, since I will probably go next year. When I go there I usually buy a board over there and play safe and pick enough volume to have juste one board, 76L for me is enough to schlog out and ride bigger stuff and windy day(usually go in mid oct, to mid nov). I will probably pick something 70 to 78...depend on deals.
I will twist my question a bit. Usually for EUro type of wave sailing, a good indication for an average size of board is the weight + 10, so 75 + 10 = 85L( unless you are only 50kg...there is some limit I guess), so the 86 sounds good...unless it is more like a 90L and the 82..more like 85. I prefer smaller than bigger and struggle a bit, but surf better. So my twisted question, If you will have to travel arround the world, maui, Oz, SA, France, Portugal, East Coast USA, Caberete for example, what would be your one board do it all...wave sailing is the priority (I got a freestyle board for flat water). I usually bring 5.2 and less...but my biggest sail is a 5.8 for freestyling...maybe I could put that in the equation for a onshore wave riding day, I might be tempted!! Thanks a lot again!

Hmm. Not easy. I generally don't ride bigger boards for my typical euro (swedish) sailing than on Maui. In fact, hare we mostly have wind swell so you are unlikely to sail in as little wind as you do on Maui so you are less dependent on size (assuming your board is quick and effective enough).

My classic do it all boards was the EVO 70. Took a 5.3, handled 3.5 OK and could be sailed to good effect also on Maui. The only better all round board I used was the Evil Twin 70 (a real 72 liters) which extended both the light wind sloggability, the high wind control and the ability to work well in bigger Maui waves.

Now I would probably take the Quad IQ 74 but for me I suspect it is a tad too wide for Maui. My 69 (upcoming board in the Quad range) is for me not bad all round either, but a version of that with 3-4 liters more, maybe 54.5-55 cm width and a slightly less extreme rocker would probably make the best current all round wave board for me. So as you can see, I'm not a "volume man", despite being a bit of a "light wind specialist" (both on Maui and at home).

Size wise in the current range, the EVO IQ 71 at 56cms is probably the best fitting all round board for me, but I have not sailed it enough to evaluate it's all roundness... and I'm kind of hooked by the quads so...

Thanks for all that info, I will probably go for the 82 Quads...still jugling! That was my way of thinking also, but what all messed me around was last month at the hatteras wave jam. One day, the only sailor out was a kid(arround 60kg) on a 99L Wave board. On the last day I was there, Graham Ezzy wasn't able to go out with his 83L Wave board(Unless his quatro was a custom and was smaller ?), he borrowed a 92 L Twins and he showed us how to properly do off the lip!!! I'M planning to go there more often and I need a tool and for the weeds...aaaahhh I will have my smaller board for it. Thanks.

There is always the occasional. I remember a day in light side/on wind and head high wave but a SICK downwind current. No way you could ride waves without planing on the way out since you would just float away downwind. But I happened to have an Aero 117 mega fast and big wave board and a 6.3 wave sail and had a lot of fun. But since that day, I don't think I've come across a single day when I would have been happier on the Aero 117 than on a 75-80 liter normal wave board

So it will in he end be about a relationship between range and all round qualities on one hand and specific performance in particular conditions on the other hand. I reckon that is you want all round qualities of any sort, you should not wander off too far in shear size.

But with one good "normal sized" all round wave board in the quiver, you always have the option of making the no 2 boards being a "specialist". If you get the sort of conditions that particular board is specialized for regularly, it might still be an awesome board.